NEW: [Opcenter] registration of custom DNS, mail providers. See DNS.md. FIXED: [Bootstrapper] duplicate notifications generated for jobs. [Ghost] Fails to start on fresh install from missing interpreter. [Opcenter] apache,subnum off-by-one error. [PHP] move socket after PHP-FPM pool operation. During stop/start operations in Bootstrapper a rare race condition (<0.5%) was observed in which one or more pools may after the socket has been restarted thus inhibiting socket activation. [systemd] verify systemd-resolved enabled in local presets. Images provisioned with systemd-resolved enabled will lose this setting whenever systemd package updates per rules in /usr/lib/systemd/system-preset/90-default.preset. [upcp] always cleanup SSH agent directory. CHANGED: [Bootstrapper] SCL may be controlled individually via has_scl setting. [ClamAV] disable freshclam in client-only mode. [Network] enable bidirectional explicit congestion notification. This has been the default in iOS 11+ and network infrastructure sufficiently new since introduction 20 years ago. [Opcenter] aliases,max=0 disables end-user addon domain management while retaining administrative alias usage. [PHP] reset failed state on pool restart. [Scopes] cp.nightly-update- permit systemd.time(7)-style updates